DRINKING WATER

GettyImages-157742535 molecule pfas Custom Tank Designs That Actively Manage PFAS Mass Transfer Zone (MTZ) — And Why It Matters More Than Ever

As utilities prepare for the pending 4-ppt PFAS drinking water MCL, many are discovering that legacy lead/lag designs—workhorses for decades when treating contaminants in the ppm and ppb range—simply are not optimized for the parts per trillion-level (ppt) precision PFAS demands.

DRINKING WATER CASE STUDIES AND WHITE PAPERS

  • AMERICAN Provides 'Major League' Solutions For Atlanta Braves' New Stadium

    Major League Baseball may be in their All-Star Break, but AMERICAN’s pipe, hydrants, and valves at World Series Champion Atlanta Braves’ Truist Park stadium never take a break. AMERICAN’s all-star line-up of products serve and protect 24/7/365 for decades. 

  • Advances In UV Disinfection For Wastewater Tertiary Treatment In Open Channels

    Meeting modern water reuse goals requires moving past legacy disinfection. Advances in UV technology now provide chemical-free, reliable pathogen inactivation for even high-flow, open-channel tertiary treatment.

  • The Payoff From Improved Chemical Dilution

    Chemical dilution systems play a critical role in many municipal and industrial water treatment systems. However, older technology tends to be less reliable and accurate while being a drain on resources, whereas a more advanced solution can significantly improve performance and generate labor savings.

  • Radium Removal For A Large Treatment System

    The City of San Angelo, TX selected WRT’s Z-88 Radium Removal treatment system for reducing high levels of radium in their wells. The city’s Phase I treatment plan was fulfilled in 2014 with the installation of the first Z-88 Radium Removal treatment system. This large treatment facility has been reducing the levels of radium below the Maximum Contaminant Level (MCL) since it’s inception.

  • United Utilities Trunk Main Trial

    United Utilities supplies water to 3 million homes and 200,000 businesses in North West England. Within the Winscales and Scilly Banks service reservoir zones where the trial was to take place, local United Utilities NCI / NIA had previously split the main and quantified losses of 4 liters/sec and 2 liters/sec in the respective halves. Leak detection on trunk mains using correlation techniques has always had potentially limited success for reasons of poor sound propagation and scarcity of accessible fittings. The business challenge was to exceed these limitations, improve efficiency and reduce leakage.

  • Spotlight On Reclaimed Water Regulations: California

    Technological advancements play a crucial role in shaping reclaimed water regulations, as new methods for treating and reusing wastewater emerge.

  • AEC System Proven Effective For Chloride Removal

    In two bench-scale tests, a new technology effectively removed up to 99% of chlorides and 97% of total dissolved solids in a single pass. This solution offers a commercially viable alternative to traditional treatment methods.

  • 5 Ways To Ensure Your AMI Transition Is A Success

    While AMI’s benefits are widely recognized, implementation remains a major challenge for many utilities. This article offers practical insights into navigating the complex path to AMI deployment.

  • Monitoring Lead In School Drinking Water

    The EPA’s guidance documentation “3T’s for Reducing Lead in Drinking Water in Schools and Child Care Facilities: Training, Testing, Telling” recommends for schools to routinely test their facility’s drinking water, with a focus on lead levels in drinking water fountains.

  • SuperDisc™ Filtration System Case Study

    Glendale Heights Wastewater Treatment Plant discharges treated water to the East Branch of the DuPage River in Illinois.

DRINKING WATER APPLICATION NOTES

  • Optimization Of Water Treatment Using Zeta Potential
    5/27/2020

    Drinking water in the US and developed nations of the world is treated to remove contamination of foreign materials, both mineral and organic.

  • Application Note: Simultaneous Determination Of Total Bound Nitrogen (TNb) And Total Organic Carbon (TOC) In Aqueous Samples
    5/31/2011
    Total bound nitrogen (TNb) consists of dissolved ammonia, nitrates, nitrites, amines, and other organic nitrogen-containing compounds. TNb measurements represent an alternative to Total Kjeldahl Nitrogen (TKN) analysis for rapid screening of industrial wastewater, drinking water,agricultural run-off, and surface waters. By OI Analytical
  • Simplify And Optimize Your Process With Level And Pump Control
    3/1/2022

    Level controllers have evolved to meet today’s environmental challenges and industry demands. Learn how they support improved process management and, ultimately, a better bottom line.

  • Immediate pH Correction For Fluctuating Flow
    2/19/2014

    In a number of water, wastewater and industrial process applications, pH is one of the most critical and highly sensitive analytical measurements.  Examples of critical pH applications include: Reverse Osmosis (RO) systems in which a controlled feed of caustic solution is typically added to the feed stream in order to convert a portion of dissolved carbon dioxide into bicarbonate precipitate allowing for removal by the RO membrane. By Rafik H. Bishara, Steve Jacobs, and Dan Bell

  • Protection Of Membrane Systems Utilized For Municipal Water
    12/1/2020

    As water scarcity issues around the world become more acute, more municipalities are having to turn to alternative water sources for potable water supplies. Also, many municipalities in coastal areas are seeing the quality of their water sources degrade as sea water intrusion occurs.

  • Determination Of Pesticide Residue In Vegetables
    9/10/2014

    QuEChERS is a Quick-Easy-Cheap-Effective-Rugged-Safe extraction method that has been developed for the determination of pesticide residues in agricultural commodities.

  • Bottled Water Industry: Liquid Analytical Solutions
    11/10/2013

    Americans consume more than 9.1 billion gallons of bottled water annually - an average of twenty nine gallons per person every year. 

  • Water Treatment In Boilers And Cooling Towers
    10/29/2021

     Most people recognize problems associated with corrosion. Effects from scale deposits, however, are equally important. For example, as little as 1/8" of scale can reduce the efficiency of a boiler by 18% or a cooling tower heat exchanger by 40%!

  • How Activated Carbon Works To Purify Air And Water
    10/31/2019

    The first step is to define the performance limiting factors in the application. For this application, most of the adsorber is used for MTBE adsorption in the ppb concentration range. Adsorption of BTEX, TBA, or humic acids or other total organic carbon (TOC) components are removed by the front end of the column.

  • FLEX-TEND® Flexible Expansion Joints, Features And Specifications
    12/3/2020

    FLEX-TEND® flexible expansion joints are designed to protect structures and pipelines from differential movement whether this movement is earthquake induced or the gradual motion of soil subsidence. This bulletin offers a concise listing and discussion of the important features and materials of the double and single ball assemblies.

DRINKING WATER PRODUCTS

Octave brings the latest in ultrasonic metering technology to Commercial/Industrial (C&I) water meters and puts precise measurement where the real flows exist.

Endress+Hauser releases the Memograph M RSG45 Advanced Data Manager DIN rail version, an intelligent remote device with extensive communication capabilities, making it ideal for IIoT applications and use as an edge device for getting data to cloud-based servers. Thanks to its intuitive operation, Memograph M adapts quickly and easily to any application. The process values are clearly presented on the display and logged safely, limits are monitored and analyzed.

Proprietary Composite Spiral Element. Available in Fiberglass and Netting Wrap configurations. Anti-Telescoping Device (ATD) both ends. Brine seal (one end) - Fiberglass Wrap only.

ECT2’s SORBIX™ L Series is designed for projects requiring flow rates of 35 GPM or less. For optimum performance, two vessels should be installed in a lead/lag configuration.

The DigitalFlow DF868 is a full-featured, fixed-installation liquid flowmeter designed to meet all your flow metering and energy measurement needs. Its patented Correlation Transit-Time™ digital signal processing provides drift-free measurements in ultraclean and most “dirty” liquids. This includes fluids with gas bubbles and entrained solids that have previously required Doppler-type meters.

Learn about KROHNE's ultrasonic clamp-on flowmeter for temporary flow measurement of liquids.

LATEST INSIGHTS ON DRINKING WATER

DRINKING WATER VIDEOS

This 45-minute webinar will explore the latest technology and methodologies that are transforming water management. Participants will gain a comprehensive understanding of how real-time data analytics can significantly enhance the efficiency and accuracy of water-loss detection and proactive management.

The Orange County Water District (OCWD) has long been an innovative leader in indirect potable reuse. An integral component of its Groundwater Replenishment System (GWRS) – a 100 million gallon per day advanced water purification facility – is reverse osmosis membrane technology.

During the summer months, El Paso experiences a spike in water demand increasing the dependency on river water. But what happens if there is little or no river water?

In 2007 he was named People magazine's Sexiest Man Alive, but these days, Matt Damon is getting noticed for something far less sexy. During a trip to Africa in 2006, Damon made it his mission to help people in developing countries have access to safe water and sanitation. He talks to Katie Couric in "World 3.0".

Lead poisoning water service lines are turning up around the globe at an alarming rate leaving millions angry. ePIPE's innovative technology creates a new pipe barrier inside the service lines eliminating water contact with the lead service lines.

ABOUT DRINKING WATER

In most developed countries, drinking water is regulated to ensure that it meets drinking water quality standards. In the U.S., the Environmental Protection Agency (EPA) administers these standards under the Safe Drinking Water Act (SDWA)

Drinking water considerations can be divided into three core areas of concern:

  1. Source water for a community’s drinking water supply
  2. Drinking water treatment of source water
  3. Distribution of treated drinking water to consumers

Drinking Water Sources

Source water access is imperative to human survival. Sources may include groundwater from aquifers, surface water from rivers and streams and seawater through a desalination process. Direct or indirect water reuse is also growing in popularity in communities with limited access to sources of traditional surface or groundwater. 

Source water scarcity is a growing concern as populations grow and move to warmer, less aqueous climates; climatic changes take place and industrial and agricultural processes compete with the public’s need for water. The scarcity of water supply and water conservation are major focuses of the American Water Works Association.

Drinking Water Treatment

Drinking Water Treatment involves the removal of pathogens and other contaminants from source water in order to make it safe for humans to consume. Treatment of public drinking water is mandated by the Environmental Protection Agency (EPA) in the U.S. Common examples of contaminants that need to be treated and removed from water before it is considered potable are microorganisms, disinfectants, disinfection byproducts, inorganic chemicals, organic chemicals and radionuclides.

There are a variety of technologies and processes that can be used for contaminant removal and the removal of pathogens to decontaminate or treat water in a drinking water treatment plant before the clean water is pumped into the water distribution system for consumption.

The first stage in treating drinking water is often called pretreatment and involves screens to remove large debris and objects from the water supply. Aeration can also be used in the pretreatment phase. By mixing air and water, unwanted gases and minerals are removed and the water improves in color, taste and odor.

The second stage in the drinking water treatment process involves coagulation and flocculation. A coagulating agent is added to the water which causes suspended particles to stick together into clumps of material called floc. In sedimentation basins, the heavier floc separates from the water supply and sinks to form sludge, allowing the less turbid water to continue through the process.

During the filtration stage, smaller particles not removed by flocculation are removed from the treated water by running the water through a series of filters. Filter media can include sand, granulated carbon or manufactured membranes. Filtration using reverse osmosis membranes is a critical component of removing salt particles where desalination is being used to treat brackish water or seawater into drinking water.

Following filtration, the water is disinfected to kill or disable any microbes or viruses that could make the consumer sick. The most traditional disinfection method for treating drinking water uses chlorine or chloramines. However, new drinking water disinfection methods are constantly coming to market. Two disinfection methods that have been gaining traction use ozone and ultra-violet (UV) light to disinfect the water supply.

Drinking Water Distribution

Drinking water distribution involves the management of flow of the treated water to the consumer. By some estimates, up to 30% of treated water fails to reach the consumer. This water, often called non-revenue water, escapes from the distribution system through leaks in pipelines and joints, and in extreme cases through water main breaks.

A public water authority manages drinking water distribution through a network of pipes, pumps and valves and monitors that flow using flow, level and pressure measurement sensors and equipment.

Water meters and metering systems such as automatic meter reading (AMR) and advanced metering infrastructure (AMI) allows a water utility to assess a consumer’s water use and charge them for the correct amount of water they have consumed.